A comparison of an adaptive full-order observer and a reduced-order observer for synchronous reluctance motor drives

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© 2011 Institute of Electrical & Electronics Engineers (IEEE). Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other work.

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Volume Title

School of Electrical Engineering | A4 Artikkeli konferenssijulkaisussa

Date

2011

Major/Subject

Mcode

Degree programme

Language

en

Pages

5

Series

Abstract

Two back-EMF-based position observers are compared for motion-sensorless synchronous reluctance motor drives. The reduced-order observer is of the second order, and the adaptive full-order observer is of the fourth order. The proposed design rules guarantee the stability of the adaptive full-order observer, if the parameter estimates are accurate. The observers are experimentally evaluated using a 6.7-kW synchronous reluctance motor drive in low-speed operation and under parameter errors. The gain selection of the second-order observer is easier, but the adaptive full-order observer is more robust against parameter variations and spatial harmonics.

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Keywords

observer, stability conditions, speed sensorless, parameter uncertainties

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Citation

Tuovinen, Toni & Hinkkanen, Marko & Luomi, Jorma. 2011. A comparison of an adaptive full-order observer and a reduced-order observer for synchronous reluctance motor drives. 2011 Symposium on Sensorless Control for Electrical Drives (SLED). 5. ISBN 978-1-4577-1853-3 (electronic). DOI: 10.1109/sled.2011.6051555.